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Civil Engineering :: Building Materials

  1. For preparing porcelains, the clay should be

  2. A.

     Sufficiently pure

    B.

     Of high degree of tenacity

    C.

     Of good plasticity

    D.

     All the above

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  3. Bessemer process is used for the manufacture of

  4. A.

     Pig iron

    B.

     Cast iron

    C.

     Wrought iron

    D.

     Steel

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  5. For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of

  6. A.

     1 : 2

    B.

     1 : 3

    C.

     1 : 4

    D.

     1 : 6

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  7. Bullet proof glass is made of thick glass sheet sandwiched by a layer of

  8. A.

     Steel

    B.

     Stainless steel

    C.

     High test plastic

    D.

     Chromium plate

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  9. Good quality cement contains higher percentage of

  10. A.

     Tri-calcium silicate

    B.

     Di-calcium silicate

    C.

     Tri-calcium aluminate

    D.

     Tetra calcium alumino ferrite

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  11. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:

  12. A.

     Radial shakes

    B.

     Heart shakes

    C.

     Wind cracks

    D.

     Twisted fibres

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  13. The most commonly used synthetic abrasive is

  14. A.

     Aluminium carbide

    B.

     Boric acid

    C.

     Silicon

    D.

     All of these

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  15. The main constituent which imparts hydraulicity to hydraulic lime is

  16. A.

     Calcium oxide

    B.

     Silica

    C.

     Clay

    D.

     Water

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  17. Sandstone is a
    (i) Sedimentary rock
    (ii) Aqueous rock
    (iii) Siliceous rock

  18. A.

     Only (i)

    B.

     Both (i) and (ii)

    C.

     Both (i) and (iii)

    D.

     All (i), (ii) and (iii)

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  19. For one cubic metre of brick masonry, number of bricks required, is

  20. A.

     400

    B.

     425

    C.

     450

    D.

     500

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